Relations with the Middle East

WASHINGTON (AP) - The U.S. ambassador to the United Nations says the Obama administration needs more time to pursue a deal with Iran on nuclear weapons -- and needs to do so without new sanctions. Samantha Power tells "CBS This Morning" that one key obstacle is the "generations of suspicion" between the two countries. Many Republicans and Democrats in Congress have been pushing for tougher economic sanctions on Tehran, which denies it's trying to build nuclear weapons.